Wrench.



J. H. JENNER.

WRENCH.

APPLICATION FILED JUNE3,1912.

Patented Mar. 11, 1913.

2 SHEETS-SHEET l.

gvcmtor qmdwwooao J. H. JENNER.

WRENCH.

APPLICATION FILED JUNE 3, 1912.

Patented Mar. 11, 1913 2 SHEETS-SHEET 2.

Suuamtoz fa/inf]. feizrzr Gum UNITED stra'rss PATENT, OFFICE.

JOHN HENRY JENNER, OF LEAVENWORTH, INDIANA.

WRENCH.

To all whom it may concern:

Be it known that I, JOHN H. JENNER, a citizen of the United States,residing at Leavenworth, in the county of Crawford and State of Indiana,have invented certain new and useful Improvements 1n Wrenches;

and I do declare the following to be a full, clean, and exactdescription of the invention, such as will enable others skilled in theart to which it appertainstomake and use the same.

This invention relates to improvements in wrenches, and moreparticularly to pipe wrenches.

one object of the invention is to provide a simple and easily operatedwrench of this class having a. swinging jaw and a rigid jaw, theswinging jaw being removable and equipped with a reversible fulcrumblock to adapt it to be readily and quickly adjusted to fit pipes ofdifferent sizes.

Another object of this invention is to provide a quick acting wrench ofthis character, by the use of which a great economy in labor and time isetiectedf 4 .With these and other objects inventionconsists of certainnovel features of construction, and the combination and arrangement ofparts as will be more fully described and claimed.

In the accompanying drawings? Figure 1 represents aperspective view of aWrench constructed in accordance with this invention, and with the jawsin open position; Fig. 2 is a rear edge view thereof; Fig. 3 is a detailperspective view of the pivoted jaw and its detached cam block; F ig lis a side elevation of a portion of the wrench showing the parts inposition ready to remove the pivoted jaw; Figf5 is a detail perspectiveview of the rigid jaw and a portion of the stock to which it is fixed;Fig. 6 is a detail perspective view of the jaw locking lever; Fig. 7 isa transverse vertical section-on the line 77 of Fig. 1.

In the embodiment. illustrated, a stock 1 is shown composed of steel,iron .or other suitable material and having a handle at one .endanda'rigid jaw 2 at the'other end. This rigid jaw 2 is formed on a head 3arranged at an oblique angle to the stock 1, and having shoulders tformed longitudinally on its opposite faces,'whereby said head isprovided with a thickened portion and with a reduced portion which has abook 5 on its rear end, the space between the inner face.

Specification of Letters Patent.

Application filed June 3, 1912.

in view, the

Patented Mar. 11, 1913. Serial Nol 701,269.

tends transversely across the rear of said stock and is arc-shaped orsegmental in cross section, for a "purpose to be described.

The pivoted jaw 7 is shown in hookshaped form, having serrations 8 onits inner face for coiipration with the serrations on the fixed jaw. Theshanlr of this jaw 7 is bifurcated, and an oblong cam 9 is ivotallymounted at one end between the ifurcated portions of the jaw. This cam 9correspoxpds in shape to the shape of therecess 6 for ed in the head 3,and is adapted to fit therein for connecting the pivotedjaw to saidhead. It will be obseryed that by pivoting one end of thiscam to theivoted jaw, a short and a long end are thereby provided,

and when it is designed to adapt the wrench for use on small pipes thelong end is .m-

serted in the recess 6 of the-head 3, whereby the coiiperating faces ofthe two jaws H arebrought into closer relation than when the short endis inserted insaid recess, it being obviousthat the insertion of theshort end in the recess will dispose the free end of the shank-nearer tothe rear face of the fixed jaw, and, consequently, will position thecooperating face-of the pivoted jaw farther from said fixed jaw.

A removable member for holding the pivoted jaw in operative position ishere shown in the form of a casing 10 slidably mounted on the stock 1,and having a recessed bearing or lug 11, the recess 12 therein beingrounded to fit the ends of the cam 9, and when the casing is locked inoperative position by -means to be described, holds said cam securelywithin the recessfi and thereby connects the pivoted jaw with the head3.

The portion of the casing which carries the lug 11 projects beyond therear edge of the stock 1 and has a round opening 13 extendingtransversely therethrough, one side of which overlaps the portion of thecasing which fits over the stock- .1, and which, when said casing is inits extreme 55 Y which brings the pin 18 thereon in position i soforward position, brings said recess13 into register with the recess 12'in the rear edge of the stock, thereby forming a circular aperture intowhich is adapted to be inserted a hollow internally screw threaded stud14; on a locking lever 15, now to be described. This stud 14 has oneflat outer face to permit the casing 10 to disengaged from the stock 1and to slide freely thereonwhen so released, which occurs when the studis turned to bring-the flat face thereof into engagement with the fiatface of the'rear edge of the stock, as is shown clearly in Fig. 4. Whenthe rounded face ofsaid stud engages the recess 12 of the stock, thecasing is locked to the stock and thereby securely'holds the pivoted jawin operative position.

The locking lever 15, which is equipped with the stud 14, has one endcurved to con form to the curvature of the head 3, and the terminalthereof is provided with a laterally extending hook-shaped member 16which is adapted to span said head and engage the rear edges of thebifurcated portions of the shank of the pivoted jaw to lock said jaw ingripping or closed position, said lever being held in this position bymeans to be described. A large-headed screw 17 is adapted toscrew intothe hollow stud 'of the lever 15 from the side of the casing ing 10.

opposite that to which the lever is applied, and reliably connects thelever and cas- The rear or handle vend of this lever conforms somewhatto theform of the wrench, and is offset laterally at a point aboutmidway its length to adapt it to be sprung over a lateral projection18onfa lever locking member 19 slidably mounted on the stock at the rearof the casingilO. This 'member 19 is shown in the form of a sleeve 'withan extension projecting beyond,

the inner edge of the stock 1, and in which extension said projection'18 is mounted, it being here shown in the form of a stud adapted toengage the inner edge of the [lever 15 and prevent its .opening beyondiapredetermined point when said locking member isarranged between thecasing 10 and said lever handle. When itis desired to remove the pivotedjaw and reverse the fulcrum block thereof in the recess 6, the lockingmember 19 is slipped rearwardly on the stock l to its extreme rearwardlimit,

opposite the offset handle of said lever port on, thereby permittingsaid handle to be moved over said stud and the lever opened into theposition shown in Fig. 1. This lever may be then turned to release thestud 14 from the recess v 12 in the stock l and permit the casingto beslipped rearwardly to disengage the recessed lug 11 from the block 9.Theblock may be then readiiy :being limited by slipped out of the recess6 andreversed and the parts a ain brought into operative position by sliing the casing 10 forwardly on the stock and turning the lever intoclosed position, and then moving the locking elements forwardly.

The inner edges of the bifurcated portio of the pivoted jaw are adapted'to engage the shoulders 4 at the front end of the head 3 and therebylimit the forward movement of the pivoted jaw, its rearward movement athe book 16 of the locking lever 15, as heretofore described.

"In the operation of this improved wrench,

the parts being in the position shown in Fig. 1 and the handle ofthewrench gripped in the right hand of the operator, the free end of thehandle of the lever 15 is moved away from said wrench handle *topermitthe pivoted jaw to swing rearwardly into open position to provideforthe gripping of a pipe between said pivoted jaw and the rigid jaw.After the pipe has been gripped by the jaws the lever handle is movedinwardly and gripped bythe right hand of theoperator together with thehandle of, the wrench, thereby securely locking the aws in grippedrelation. .The front edge of this lever 15 is curved downwardly betweenthe handle and the fulcrum thereof, said curved portion limiting theextent of movement of the jaw engaging portion of said lever when thelocking member 19 is disposed on the stock in advance of'said curvedportion of.

the lever, it having been heretofore de'- scribed that the lever' may beentirely released to open to its full extent-when the locking element ismoved beyond a prede-.

termined point.. Y

'I claim as my invention:

1. A wrench having a fixed and a movable jaw, said movable jaw beingremovable I and provided with reversible means pivoted thereon forvarying the size of the space between it and the fixed jaw.

2. A wrench comprisinga'stock having a fixed j'aw at one end, and amovable jaw pivotally mounted in relation to said fixed jaw and having areversible member pivoted thereto for varying the size of the spacebetween said jaws when in operative position. 3. A wrench comprising astock having a fixed jaw at one end, a movable jaw pivotally mounted inrelation to said fixed jaw and having a reversible member pivotedthereto for varying the size of the space between said jaws when inoperative position, andmeans under the control of the operator forlimiting the outward movement of said movable jaw;

4. A wrench comprising a stock having a head at one end provided with afixed jaw and with a recess at the rear of said jaw, a

.movable jaw having a block pivotally mounted thereon and adapted to fitwithin Shaped end for engaging said movable jaw for limiting its outwardmovement and for locking said jaw in closed position, and a leverlocking element slidably mounted on said stock.

6. A wrench comprising a stock having an obliquely disposed head at oneend thereof, a fixed jaw at the free end of said head, a recess formedin said head at the rear of said jaw, a pivoted jaw having a bifurcatedshank, an oblong block pivotally mounted at oneend in said bifurcatedshank and adapted to fit in said recess, and lever controlled means forlocking said block in said recess.

7. A wrench comprising a stock having an obliquely disposed head at oneend thereof, a fixed jaw at the free end of ,said head, a recess formedin said head at the rear of said jaw, a pivoted jaw having a bifurcatedshank, an oblong block pivotally mounted at one end in said bifurcatedshank andadapted to fit in said recess, a casing slidably mounted onsaid stock having a recessed lug for engaging the outer end of saidblock for holding it in operative position, and means for locking saidcasing in position on said stock to cause said lug to engage said block.

8. A wrench comprising a stock having an obliquely disposed .head at oneend thereof, a fixed jaw at the free end of said head, a recess formedin said head at the rear of said jaw, a pivoted jaw having a bifurcatedshank, an oblong block pivotally mounted at on end in said bifurcatedshank and adapted in. fit in said recess, a casing slidably mounted onsaid stock having a recessed lug for engaging the outer end of saidblock for holding it in operative position, said casing having anaperture extending transversely therethrough and overlapping said stockat one side, a recess in the rear edge of said stock adjacent said head,and a rotatable member mounted in said casing and adapted to engage therecess in said stock for locking said casing to the stock in operativeposition to cause the lug thereof to engage said block.-

9. A wrench'eom risinga stock having an obliquely disposed head at oneend Copies of this parent may be obtained for five cents each, byaddressing Washington, D. 0.

thereof, a fixed jaw at the free end of said head, a recess formed insaid head at the rear of said jaw, a pivoted jaw having a bi.- furcatedshank, an oblong block pivotally mounted at one end in said bifurcatedshank and adapted to fit in said recess, a casing slidably mounted onsaid stock having a recessed lug for engaging the outer end of saidblock for holding it in operative position, said casing having anaperture extending transversely therethrough and overlapping said stockat one side, a recess in the rear edge of said stock adjacent said head,and a rotatable member mounted in said casing and adapted to engage therecess in said stock for locking said casing to the stock in operativeposition to cause the lug thereof to engage said block, said rotatablemember having one flat face to permit it to slide on the edge of thestock when disengaged from the recess therein.

10. A wrench comprisinga stock having -an obliquely disposed head at oneend thereof,a fixed jaw at the free end of said head, a recess formed insaid head at the rear of said jaw, a pivoted jaw having a bifurcatedshank, an oblong block pivotally mounted at one end in said bifurcatedshank and adapted to fit in said recess, a casing slidably mounted onsaid stock having a recessed lug for engag ng the outer end of saidblock for holding it in operative position, said casing ha ing anaperture extending transversely therethrough and overlapping said stockat one side, a recess in the rear edge of'said stock adjacent said head,a rotatable member mounted in said casing and adapted to engage therecess in said stock for locking said casing to the stock in operativeposition to cause the lug thereof to engage said block, said rotatablemember having one fiat face to permit it to slide on the edge of thestock when disengaged from the recess therein, and a lever fixed to saidrotatable casing locking member and having means for locking the movablejaw in closed position and for limiting its outward movemerit.

11. A-wrench comprising a stock having a head at one end provided with afixed jaw and with a recess, a movable jaw having a block pivotallymounted thereon and adapted to fit within said recess, and means forlocking said block in said recess.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

JOHN HENRY JENNER. Witnesses:

LUTHER PETERS, HA'rrm ELLswoR'rH.

the Commissioner of Patents,

